Abstract
In the regional climate warming context, estimating changes in precipitation patterns is as important as estimation of changes in air temperature. This paper analyzes changes in precipitation over the White Sea catchment area based on long-term data from Roshydromet meteorological stations. Changes in annual and monthly precipitation, a number of days with precipitation of varying intensity, contributions of solid and mixed precipitation, duration of the solid precipitation period, and depth and duration of the snow cover were estimated. It is demonstrated that starting from the beginning of the 21st century almost all of the area has seen a rise in precipitation throughout the year, an increase in the number of days with heavy precipitation (10 mm and more per day), a change in the ratio of solid and mixed fractions in total annual precipitation, and an alteration of their regime. Also, the duration of the snow cover has decreased
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